Numerical analysis of waves attenuation by vegetation in enclosed waters
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2018-01-01
Autores
Mattosinho, G. O.
Maciel, G. F. [UNESP]
Vieira, A. S.
Fortes, C. J. E. M.
Soares, C. G.
Santos, T. A.
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Crc Press-balkema
Resumo
Numerical simulations using the SWAN-VEG model (Simulating WAves Nearshore, with vegetation module) were performed considering the case of Ilha Solteira (SP) reservoir, a navigable stretch of the Tiete-Parana waterway. The objective was to analyse the attenuation of wind-generated wave energy by the presence of vegetation in the left margin of reservoir (place of higher simulated wave heights). In this analysis, we varied the vegetation parameter, V-f, different submergence ratios and the wind intensity for NE wind direction. The results pointed up a neglegible influence of mesh size but high wave attenuation coefficients due the presence of vegetation. Application of non-structural measures to the attenuation of waves in these areas is plausible and should be encouraged because in addition to producing high attenuation coefficients, this is in general a cheaper and environmentally friendly solution.
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Progress In Maritime Technology And Engineering. Leiden: Crc Press-balkema, p. 687-691, 2018.